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innodb

Recently I went through the exercise of setting up a new replicated slave host. I proceeded through my normal list of tasks to get the new host stood up. This time, something different happened. Replication crashed. Hard. Last_SQL_Error: Could not execute Update_rows event on table core_stats.plays_hourly; Can’t find record in ‘plays_hourly’, Error_code: 1032; handler error […]

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When using InnoDB tables in MySQL, the option exists to apply foreign key constraints. Data modelers do this for various reasons, which I’m not going to explore here. What’s important is that these constraints are religion for DBAs (and client software) and have to be respected to maintain data integrity. Knowing the hierarchy of data […]